I'm a smoker for 13 years,I tried to quit and I smoked e-cigarettes. It was better for my breathing and doing sports, but I didn't felt happy without "real cigarettes". I missed the feeling while breathing in and the taste of the brand of the package,role cigarettes. A big problem was drinking beer and not smoking, so difficult. And in Germany it's not possible to buy vaporizer(weed,pott,dope), next problem :-(
I have a lot of respect of people quit smoking!